Skip to content

WAEC WASSCE 2021

WAEC Mathematics 2021 past questions

6 objective questions from the 2021 WAEC Mathematics paper. Answer each one, then reveal the answer and explanation.

All WAEC Mathematics past questions

  1. Question 1

    Percentages

    A trader bought an article for ₦8,000 and sold it for ₦10,000. Find the percentage profit.

    1. Option A: 20%
    2. Option B: 25%
    3. Option C: 30%
    4. Option D: 80%
    Show the answer to question 1

    Answer: B, 25%

    Profit = ₦2,000. Percentage profit = 2,000 ÷ 8,000 × 100 = 25%.

  2. Question 2

    Percentages

    A trader bought a radio for ₦8,500 and sold it for ₦14,875. Find the percentage profit.

    1. Option A: 42.9%
    2. Option B: 75%
    3. Option C: 80%
    4. Option D: 150%
    Show the answer to question 2

    Answer: B, 75%

    Profit = ₦6,375. Percentage profit = 6,375 ÷ 8,500 × 100 = 75%.

  3. Question 3

    Mensuration

    Find the volume of a cylinder of radius 35 cm and height 16 cm. (Take $\pi = \frac{22}{7}$.)

    1. Option A: 3,850 cm³
    2. Option B: 123,200 cm³
    3. Option C: 3,520 cm³
    4. Option D: 61,600 cm³
    Show the answer to question 3

    Answer: D, 61,600 cm³

    Volume = $\pi r^2 h$ = 22/7 × 35² × 16 = 61,600 cm³.

  4. Question 4

    Linear equations

    Solve for $x$: $6x + 11 = 23$.

    1. Option A: x = 3
    2. Option B: x = 2
    3. Option C: x = 1
    4. Option D: x = 5.67
    Show the answer to question 4

    Answer: B, x = 2

    Subtract 11 from both sides to get 6x = 12, then divide by 6: x = 2.

  5. Question 5

    Quadratic equations

    Solve the equation $x^2 - 7x + 12 = 0$.

    1. Option A: x = -3 or x = -4
    2. Option B: x = -3 or x = 4
    3. Option C: x = 3 or x = -4
    4. Option D: x = 3 or x = 4
    Show the answer to question 5

    Answer: D, x = 3 or x = 4

    The equation factorises as $(x - 3)(x - 4) = 0$, so x = 3 or x = 4.

  6. Question 6

    Statistics

    Find the mean of 41, 45, 34, 36, 39.

    1. Option A: 39
    2. Option B: 40
    3. Option C: 38
    4. Option D: 195
    Show the answer to question 6

    Answer: A, 39

    The sum is 195 and there are 5 numbers, so the mean is 195 ÷ 5 = 39.

Practise WAEC Mathematics on SchoolEasy CBT

In SchoolEasy, students answer timed questions on screen, see an explanation for every answer, and track their progress topic by topic. Teachers turn past questions into class tests that mark themselves.

Practise in the appRequest a demo for your school

School management made effortless.

We strive to build the best school management software for schools from all over the world.

Available soon on all digital platforms

Download on theApp StoreGet it onGoogle Play